Uplink data transmission method, user equipment, and readable storage medium

Abstract

An uplink data transmission method, a user equipment, and a readable storage medium are provided. The method includes: receiving DCI, wherein the DCI includes a sounding reference signal resource indication field and a precoding information field, the sounding reference signal resource indication field includes indication information of two or more transmission beams corresponding to to-be-transmitted uplink data, and the precoding information field includes transmission precoding matrix indication information corresponding to each of the two or more transmission beams; determining a transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to the transmission beam; and transmitting uplink data based on the transmission precoding matrix corresponding to each transmission beam. By the method, the transmission precoding matrices corresponding to multiple transmission beams are indicated in DCI, thereby improving reliability of uplink data transmission.

What is claimed is: 
     
       1. An uplink data transmission method, comprising:
 receiving Downlink Control Information (DCI), wherein the DCI comprises a sounding reference signal resource indication field and a precoding information field, the sounding reference signal resource indication field comprises indication information of two or more transmission beams corresponding to to-be-transmitted uplink data, and the precoding information field comprises transmission precoding matrix indication information corresponding to each of the two or more transmission beams; 
 determining a transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam; and 
 transmitting uplink data based on the transmission precoding matrix corresponding to each transmission beam. 
 
     
     
       2. The method according to  claim 1 , wherein the precoding information field comprises two or more pieces of transmission precoding matrix indication information which are respectively associated with all the transmission beams in one-to-one correspondence. 
     
     
       3. The method according to  claim 2 , wherein the transmission precoding matrix indication information is a transmission precoding matrix index value. 
     
     
       4. The method according to  claim 3 , wherein said determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam comprises:
 determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix index value corresponding to each transmission beam. 
 
     
     
       5. The method according to  claim 2 , wherein the two or more transmission beams corresponding to the to-be-transmitted uplink data comprise a first transmission beam and at least one other transmission beam rather than the first transmission beam;
 the transmission precoding matrix indication information corresponding to the first transmission beam is a transmission precoding matrix index value corresponding to the first transmission beam; 
 the transmission precoding matrix indication information corresponding to the at least one other transmission beam is position information of the transmission precoding matrix corresponding to the at least one other transmission beam in a transmission precoding matrix index value set; and 
 the transmission precoding matrix index value set comprises the transmission precoding matrix index value corresponding to the first transmission beam, and the transmission precoding matrices in the transmission precoding matrix index value set are disposed in a same precoding matrix table, and have a same number of layers. 
 
     
     
       6. The method according to  claim 5 , wherein said determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam comprises:
 determining the transmission precoding matrix index value set based on the transmission precoding matrix indication information corresponding to the first transmission beam; 
 determining at least one transmission precoding matrix index value corresponding to the at least one other transmission beam in the transmission precoding matrix index value set based on the transmission precoding matrix indication information corresponding to the at least one other transmission beam; and 
 determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix index value corresponding to each transmission beam. 
 
     
     
       7. The method according to  claim 1 , wherein the precoding information field comprises a piece of transmission precoding matrix indication information which corresponds to all the transmission beams. 
     
     
       8. The method according to  claim 7 , wherein the transmission precoding matrix indication information corresponding to all the transmission beams is first code point indication information, code points indicated by the first code point indication information correspond to the transmission precoding matrices corresponding to all the transmission beams, and a number of the transmission precoding matrices corresponding to the code points indicated by the first code point indication information matches a number of all the transmission beams. 
     
     
       9. The method according to  claim 8 , wherein the code points indicated by each first code point indication information correspond to one transmission precoding matrix, or two or more transmission precoding matrices. 
     
     
       10. The method according to  claim 9 , wherein the code points indicated by the first code point indication information further correspond to Phase Tracking Reference Signal (PTRS) port configuration information corresponding to all the transmission beams, and a number of the PTRS port configuration information corresponding to the code points indicated by the first code point indication information matches the number of all the transmission beams, and
 the method further comprises: determining a PTRS port corresponding to each transmission beam based on the PTRS port configuration information corresponding to the first code point indication information and the transmission precoding matrix corresponding to the first code point indication information, and transmitting the uplink data based on the transmission precoding matrix and the PTRS port corresponding to each transmission beam. 
 
     
     
       11. The method according to  claim 1 , wherein the DCI further comprises a PTRS port indication information field which comprises PTRS port configuration information corresponding to each transmission beam; and
 the method further comprises: determining a PTRS port corresponding to each transmission beam based on the PTRS configuration information, so as to transmit the uplink data based on the transmission precoding matrix and the PTRS port corresponding to each transmission beam. 
 
     
     
       12. The method according to  claim 11 , wherein the PTRS port indication information field comprises two or more pieces of PTRS port configuration information which are respectively associated with the two or more transmission beams in one-to-one correspondence. 
     
     
       13. The method according to  claim 11 , wherein the PTRS port indication information field comprises one piece of PTRS port configuration information which is a second code point indication information, and a number of the PTRS port configuration information corresponding to the code points indicated by the second code point indication information matches a number of the two or more transmission beams. 
     
     
       14. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising computer instructions, which, when executed by a processor, cause the processor to:
 receive Downlink Control Information (DCI), wherein the DCI comprises a sounding reference signal resource indication field and a precoding information field, the sounding reference signal resource indication field comprises indication information of two or more transmission beams corresponding to to-be-transmitted uplink data, and the precoding information field comprises transmission precoding matrix indication information corresponding to each of the two or more transmission beams; 
 determine a transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam; and 
 transmit uplink data based on the transmission precoding matrix corresponding to each transmission beam. 
 
     
     
       15. A terminal comprising a memory and a processor, wherein the memory stores one or more programs, the one or more programs comprising computer instructions, which, when executed by the processor, cause the processor to:
 receive Downlink Control Information (DCI), wherein the DCI comprises a sounding reference signal resource indication field and a precoding information field, the sounding reference signal resource indication field comprises indication information of two or more transmission beams corresponding to to-be-transmitted uplink data, and the precoding information field comprises transmission precoding matrix indication information corresponding to each of the two or more transmission beams; 
 determine a transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam; and 
 transmit uplink data based on the transmission precoding matrix corresponding to each transmission beam. 
 
     
     
       16. The terminal according to  claim 15 , wherein the precoding information field comprises two or more pieces of transmission precoding matrix indication information which are respectively associated with all the transmission beams in one-to-one correspondence. 
     
     
       17. The terminal according to  claim 16 , wherein the transmission precoding matrix indication information is a transmission precoding matrix index value. 
     
     
       18. The terminal according to  claim 17 , wherein said determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam comprises:
 determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix index value corresponding to the transmission beam. 
 
     
     
       19. The terminal according to  claim 16 , wherein the two or more transmission beams corresponding to the to-be-transmitted uplink data comprise a first transmission beam and at least one other transmission beam rather than the first transmission beam;
 the transmission precoding matrix indication information corresponding to the first transmission beam is a transmission precoding matrix index value corresponding to the first transmission beam; 
 the transmission precoding matrix indication information corresponding to the at least one other transmission beam is position information of the transmission precoding matrix corresponding to the at least one other transmission beam in a transmission precoding matrix index value set; and 
 the transmission precoding matrix index value set comprises the transmission precoding matrix index value corresponding to the first transmission beam, and the transmission precoding matrices in the transmission precoding matrix index value set are disposed in a same precoding matrix table, and have a same number of layers. 
 
     
     
       20. The terminal according to  claim 19 , wherein said determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam comprises:
 determining the transmission precoding matrix index value set based on the transmission precoding matrix indication information corresponding to the first transmission beam; 
 determining at least one transmission precoding matrix index value corresponding to the at least one other transmission beam in the transmission precoding matrix index value set based on the transmission precoding matrix indication information corresponding to the at least one other transmission beam; and 
 determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix index value corresponding to each transmission beam.